I would normally not write anything I have never experienced but it is important so I will answer based on theoretical knowledge and on books. The experiences by Carlos Castaneda when he was training with Don Juan were done under the influence of peyote, and those of Ram Dass and Allan Watts with LSD.
The stimulation of memories when meditating under the influence of hallucinogenic drugs can be very dangerous. You can read about them from the books of Ram Dass.
Those of Carlos Castaneda were experienced with another person who could monitor him, Don Juan.
It would be better not to take anything for you empirically prove and experience that bliss can be experienced without any mind altering drugs.